Patent · US Expired

Production of aminobenzaldehydes

US3971821A · kind A · utility

7Cited by

0References

7Claims

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Assignee

BASF SE

Inventors

Hans-Peter Baumann · Oberwil, CH
Klaus Grychtol · Bad Dürkheim, DE
Andreas Oberlinner · Ludwigshafen, DE

Key dates

Filing date	Dec 9, 1974
Grant date	Jul 27, 1976
Priority date	—
Expiry date	Dec 9, 1994

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C251/72
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Aminobenzaldehyde compounds and a process for their production by the reaction of an aniline with a formamide in the presence of an acid halide with or without a following reaction with a nitrogen compound. The products are starting materials for the production of optical brighteners, dyes, plant protection agents and medicaments.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.